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the measurement result window, as shown below.
6. Press Measure to finish and exit.
Time1
Figure 6-15 Time Measurement
Slope
To measure slope:
1. Press Measure to activate a measurement cursor “+”.
2. Roll the trackball to highlight Slope and press Set and a big “+” is displayed.
3. Roll the trackball and press Set to anchor the start point, and displays a big “+”.
4. Roll the trackball and press Set to anchor the end point.
5. Roll the trackball and press Set to begin a new slope measurement. You can
measure a maximum of four groups of data. The outcome will be displayed in
the measurement result window, as shown below.
6. Press Measure to finish and exit.
Time
Depth
Slope1
Figure 6-16 Slope Measurement and the Results
Heart Rate
To measure heart rate:
1. In the B/M mode, roll the trackball to change the position of the M Mark and
press Set to obtain a satisfying electrocardiogram, and then freeze it.
2. In the M mode, freeze the desired image.
Measure the distance between two peaks of cardiac cycles with the time
measurement method.
1. Press Measure to activate a measurement cursor “+”.
2. Roll the trackball to highlight Heart Rate and press Set and a “+” is displayed.
3. Roll the trackball to move the first measurement maker on the first peak systole
and then press Set to anchor start position, and the measurement mark turns to a
vertical line.
4. Roll the trackball to move the second measurement maker on the peak systole
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following two complete cycles and then press Set to anchor end position.
5. Roll the trackball and press Set to begin a new heart rate measurement. You can
measure a maximum of four groups of data. The outcome will be displayed in
the measurement result window.
6. Press Measure to finish and exit.
Figure 6-17 Heart Rate Measurement
NOTE:
In B/M mode, you should define the M Mark position, and then begin the measurement.
6.6.3. Generic Measurements in PW Mode
PW mode measurements and calculations include velocity, heart rate, time, acceleration, RI, and
D trace. The default measurement is velocity measurement. The measurement menu is shown
below.
Figure 6-18 PW Mode Generic Measurement and Calculation Menu
NOTE:
Heart rate and time measurement methods are the same as those in the M mode.
Reference Section 6.6.2 Generic Measurements in M Mode.
Velocity
To measure velocity of a point on the Doppler wave:
1. Press Measure to activate a measurement cursor “+”.
2. Roll the trackball to highlight Velocity and press Set and a “+” is displayed.
3. Roll the trackball and press Set to anchor the point, measuring velocity.
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